matplotlib.pyplot.subplots, Matplotlib Development Team, 2024 - Official API reference documentation for the plt.subplots function, detailing its parameters and usage for creating multiple subplots.
Figures and Axes Tutorial, Matplotlib Development Team, 2024 (Matplotlib Development Team) - Tutorial explaining the distinction between Figure and Axes objects in Matplotlib, which is central to object-oriented plotting with subplots.
Python for Data Analysis, Wes McKinney, 2022 (O'Reilly Media) - A widely respected book that includes practical chapters on Matplotlib, demonstrating its use in data visualization contexts.